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Invisible Watermarking on Grayscale Image

Author

Listed:
  • Mohd Shahrir Abd Rahim

    (Department of Polytechnic Education, Ministry of Education Malaysia, Putrajaya, Malaysia)

  • Nabilah Hasanah Binti Shaari

    (Universiti Malaysia Perlis, Arau, Malaysia)

  • Nur Hafizah Binti Ghazali

    (Universiti Malaysia Perlis, Arau, Malaysia)

Abstract

Digital watermarking is a procedure to embedded watermark or logo into an image to avoid copyright and protect the image from being manipulated by others without owner approval. In the Technical and Vocational Education and Training (TVET) sector, the main challenge in watermarking is how to achieve high imperceptibility or visual quality and robustness without sacrificing the capacity of the cover image. In addition, the watermark should be ably extracted without any distortion. As for that, spiral scan embedding technique is used to overcome this issue. The performance of the proposed project is evaluated by comparing the results of extracting process using spiral scan technique with sequence technique, while the imperceptibility of the cover image is measured using Peak Signal Ratio (PSNR) and robustness of the watermarked image is measured using Normalized Cross Correlation (NCC). The eesult shows that the proposed technique obtains high imperceptibility and robustness.

Suggested Citation

  • Mohd Shahrir Abd Rahim & Nabilah Hasanah Binti Shaari & Nur Hafizah Binti Ghazali, 2018. "Invisible Watermarking on Grayscale Image," International Journal of Applied and Physical Sciences, Dr K.Vivehananthan, vol. 4(3), pages 103-109.
  • Handle: RePEc:apa:ijapss:2018:p:103-109
    DOI: 10.20469/ijaps.4.50004-3.pdf
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    References listed on IDEAS

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    1. Florin Dragomir & Otilia Elena Dragomir & Mihaela Eugenia Ivan & Sergiu Stelian Iliescu & Ioana Stănescu, 2017. "Optimal embedded system for two-axis tracking PV panels," Journal of Applied and Physical Sciences, Prof. Vakhrushev Alexander, vol. 3(1), pages 1-6.
    2. Mohannad Adel Sayah & Norlaili Ahmad Kabir & Mohammad Suhaimi Jaafar, 2017. "Phantom Study: Non uniformity Quantity of Technetium-99m in Different Segments of Myocardial SPECT Image," International Journal of Applied and Physical Sciences, Dr K.Vivehananthan, vol. 3(2), pages 37-41.
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    More about this item

    Keywords

    TVET; watermarking; Matlab; PSNR; NCC;
    All these keywords.

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